20147850 has 36 divisors (see below), whose sum is σ = 54131766. Its totient is φ = 5372640.

The previous prime is 20147833. The next prime is 20147857. The reversal of 20147850 is 5874102.

It can be written as a sum of positive squares in 3 ways, for example, as 16426809 + 3721041 = 4053^2 + 1929^2 .

It is not an unprimeable number, because it can be changed into a prime (20147857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21937 + ... + 22836.

Almost surely, 2^20147850 is an apocalyptic number.

20147850 is an abundant number, since it is smaller than the sum of its proper divisors (33983916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20147850 is a wasteful number, since it uses less digits than its factorization.

20147850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44791 (or 44783 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20147850 is about 4488.6356501726. The cubic root of 20147850 is about 272.1089979103.

The spelling of 20147850 in words is "twenty million, one hundred forty-seven thousand, eight hundred fifty".